GO:1904708 regulation of granulosa cell apoptotic process: Mechanism, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:1904708 (regulation of granulosa cell apoptotic process) is a biological process term that describes any process modulating the frequency, rate, or extent of apoptosis in ovarian granulosa cells.
• Granulosa cell apoptosis is controlled by a balance of pro-apoptotic (e.g., BAX, BAK, CASP3) and anti-apoptotic (e.g., BCL2, XIAP) molecules, and is essential for follicular atresia and ovarian homeostasis.
• Dysregulated granulosa cell apoptosis contributes to polycystic ovary syndrome (PCOS), diminished ovarian reserve (DOR), and oxidative stress-induced ovarian dysfunction.
• Non-apoptotic regulated cell death pathways, including ferroptosis, also operate in the ovary and intersect with apoptotic regulation.
• Hormonal signals such as FSH control granulosa cell metabolism (e.g., glutamine synthesis) and indirectly influence cell survival and ovulation.
• CRISPR-based knockout, knock-in, point-mutation, and overexpression models are powerful tools to dissect causal roles of specific genes in regulating granulosa cell apoptosis.
Description
The ovarian granulosa cell is a critical somatic cell type that supports oocyte development, and its programmed death is a normal physiological process required for follicular atresia and ovarian remodeling. The Gene Ontology term GO:1904708, regulation of granulosa cell apoptotic process, captures any molecular event that modulates the frequency, rate, or extent of apoptosis in these cells. This term is of high interest because granulosa cell apoptosis is a central mechanism in both normal ovarian function and the pathogenesis of common reproductive disorders such as polycystic ovary syndrome (PCOS) and diminished ovarian reserve (DOR). Understanding its regulation at the molecular level is therefore essential for reproductive biology and for developing targeted therapies. Research over the past two decades has identified a complex network of pro- and anti-apoptotic molecules that govern granulosa cell fate. More recent studies have revealed that oxidative stress, microRNAs, and ubiquitin-proteasome pathways can tip the balance toward apoptosis, and that non-apoptotic cell death modalities such as ferroptosis also contribute to ovarian pathology. This article synthesizes authoritative QuickGO annotation and verified PubMed literature to provide a research-grade overview of GO:1904708, its mechanistic underpinnings, associated genes, disease relevance, and state-of-the-art experimental approaches including CRISPR genome editing.
regulation of granulosa cell apoptotic process At A Glance
| GO ID | GO:1904708 |
|---|---|
| GO term | regulation of granulosa cell apoptotic process |
| Ontology | biological_process |
| Synonym | regulation of granulosa cell apoptosis; regulation of granulosa cell of ovary apoptosis; regulation of granulosa cell of ovary apoptotic process |
| Major function | Modulates the frequency, rate, or extent of apoptosis in ovarian granulosa cells, influencing follicular atresia and ovarian function. |
| Related processes | Apoptosis, follicular atresia, oxidative stress response, hormonal regulation. |
| Key regulators | BCL2 family proteins, caspases, microRNAs (e.g., miR-484, miR-93-5p), and ubiquitin ligases such as WWP2. |
| Disease relevance | PCOS, diminished ovarian reserve, oxidative stress-induced ovarian dysfunction. |
What Is GO:1904708?
GO:1904708, regulation of granulosa cell apoptotic process, is defined as any process that modulates the frequency, rate, or extent of granulosa cell apoptotic process. In other words, it encompasses all molecular signals and pathways that either promote or inhibit the programmed cell death of granulosa cells in the ovary. This regulation can occur at multiple levels, including receptor signaling, mitochondrial control, caspase activation, and transcriptional changes, and it is essential for maintaining ovarian homeostasis and responding to hormonal cues.
Why Is regulation of granulosa cell apoptotic process Important in Cell Biology?
Regulation of granulosa cell apoptosis is fundamental to female reproductive biology because it determines the fate of ovarian follicles and thus the size of the oocyte pool. Dysregulation of this process is directly linked to infertility, premature ovarian insufficiency, and polycystic ovary syndrome, making it a prime target for both mechanistic studies and therapeutic intervention.
• Controls follicular atresia and ovarian remodeling, which are essential for normal menstrual cycles and fertility.
• Dysregulation contributes to polycystic ovary syndrome (PCOS), a leading cause of anovulatory infertility.
• Implicated in diminished ovarian reserve (DOR) and premature ovarian insufficiency.
• Oxidative stress-induced granulosa cell apoptosis is a key mechanism of ovarian dysfunction.
• Non-apoptotic cell death pathways such as ferroptosis intersect with apoptotic regulation in the ovary.
• Hormonal signals like FSH modulate granulosa cell metabolism and survival, linking endocrine control to apoptosis.
• MicroRNAs (e.g., miR-484, miR-93-5p) fine-tune apoptotic thresholds and are potential biomarkers or therapeutics.
• Ubiquitination and proteasomal degradation of BCL2 family proteins regulate apoptosis commitment.
• Provides a conceptual framework for CRISPR-based functional genomics in reproductive biology.
• Relevant to oncofertility and preservation of ovarian function during cancer treatment.
What Happens During regulation of granulosa cell apoptotic process?
Initiation by intrinsic and extrinsic signals
In simple terms: Cells receive death or survival signals from inside or outside.
Granulosa cell apoptosis can be triggered by intrinsic stressors such as oxidative stress, DNA damage, or growth factor withdrawal, or by extrinsic signals through death receptors. Pro-apoptotic BCL2 family members (e.g., BAX, BAK) are activated and permeabilize mitochondria, while anti-apoptotic proteins (e.g., BCL2, BCL-xL) oppose this step. Oxidative stress is a major initiator, as reactive oxygen species (ROS) can damage mitochondria and activate apoptotic cascades.
Mitochondrial outer membrane permeabilization (MOMP)
In simple terms: Mitochondria decide whether the cell lives or dies.
Upon activation, BAX and BAK oligomerize on the mitochondrial outer membrane, leading to MOMP and release of cytochrome c. This step is tightly regulated by the balance of pro- and anti-apoptotic BCL2 family proteins. Recent evidence shows that ROS-induced ubiquitination of BAK by WWP2 promotes its activation, linking oxidative stress to MOMP in granulosa cells.
Caspase activation and execution
In simple terms: A cascade of enzymes dismantles the cell.
Cytochrome c release triggers apoptosome formation and activation of initiator caspase-9, which then activates executioner caspases-3 and -7. These caspases cleave structural and regulatory proteins, leading to the morphological hallmarks of apoptosis. In granulosa cells, caspase-3 activity is a common readout of apoptosis and is modulated by microRNAs such as miR-484 and miR-93-5p.
Regulation by microRNAs and signaling pathways
In simple terms: Small RNA molecules and signaling cascades fine-tune the death decision.
MicroRNAs can directly target apoptotic effectors or upstream regulators. For example, miR-484 promotes granulosa cell apoptosis by downregulating SESN2 and YAP1, affecting mitochondrial function. miR-93-5p promotes apoptosis and ferroptosis via NF-kB signaling in PCOS. Hormonal signals such as FSH control glutamine synthesis, which can influence cell survival and ovulation.
Non-apoptotic cell death crosstalk
In simple terms: Other forms of cell death can also occur and interact with apoptosis.
Ferroptosis, a iron-dependent form of regulated cell death, has been observed in granulosa cells and can be promoted by miR-93-5p via NF-kB. The ovary also exhibits other regulated cell death pathways beyond apoptosis, suggesting a complex interplay that may compensate or synergize under pathological conditions.
Key Genes Involved in GO:1904708 regulation of granulosa cell apoptotic process
The following genes and proteins are experimentally validated regulators of granulosa cell apoptosis and are frequently studied in the context of GO:1904708.
| Gene | Major Role | Research Relevance |
|---|---|---|
| BAX | Pro-apoptotic BCL2 family member; promotes MOMP | Knockout reduces apoptosis; overexpression induces cell death. |
| BAK | Pro-apoptotic BCL2 family member; MOMP effector | Ubiquitinated by WWP2 under ROS; target for PCOS research. |
| BCL2 | Anti-apoptotic; inhibits MOMP | Overexpression protects granulosa cells from apoptosis. |
| CASP3 | Executioner caspase; cleaves cellular substrates | Activity assay is a standard apoptosis readout. |
| CASP9 | Initiator caspase; activates downstream caspases | Key node in intrinsic apoptosis pathway. |
| SESN2 | Stress-responsive protein; protects against oxidative stress | Downregulated by miR-484, leading to apoptosis. |
| YAP1 | Transcriptional co-activator; regulates mitochondrial function | Target of miR-484; affects apoptosis and DOR. |
| WWP2 | E3 ubiquitin ligase; ubiquitinates BAK | Promotes ROS-induced apoptosis in PCOS. |
| NFKB1 | Transcription factor; mediates inflammatory signaling | Activated by miR-93-5p to promote apoptosis and ferroptosis. |
| FSHR | FSH receptor; mediates hormonal control | FSH controls glutamine synthesis and survival. |
| MIR484 | MicroRNA; targets SESN2 and YAP1 | Promotes apoptosis; linked to DOR and oxidative stress. |
| MIR93 | MicroRNA; activates NF-kB pathway | Promotes apoptosis and ferroptosis in PCOS. |
| GPX4 | Glutathione peroxidase; protects against ferroptosis | Indirectly relevant to non-apoptotic death in granulosa cells. |
| SLC7A11 | Cystine/glutamate antiporter; ferroptosis regulator | Potential crosstalk with apoptosis in ovary. |
| TP53 | Tumor suppressor; induces apoptosis under stress | Can modulate granulosa cell apoptosis in response to damage. |
| XIAP | Inhibitor of apoptosis protein; inhibits caspases | Anti-apoptotic; may be targeted in disease. |
How Is regulation of granulosa cell apoptotic process Regulated?
The regulation of granulosa cell apoptosis is orchestrated by a network of hormonal, oxidative, and microRNA-mediated signals. FSH, a key gonadotropin, controls granulosa cell glutamine synthesis, which is required for ovulation and may influence cell survival. Oxidative stress activates the intrinsic apoptotic pathway and can also induce ferroptosis, with microRNAs such as miR-484 and miR-93-5p acting as critical modulators. Additionally, ubiquitin-proteasome system components like WWP2 regulate the stability of BCL2 family proteins, providing another layer of control. These pathways are integrated at the level of mitochondrial dynamics and caspase activation, determining whether a granulosa cell undergoes apoptosis or survives.
regulation of granulosa cell apoptotic process and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| MIR484 | Diminished ovarian reserve; oxidative stress-induced apoptosis | Knockout or overexpression in primary granulosa cells; luciferase reporter for SESN2/YAP1. |
| MIR93 | PCOS; apoptosis and ferroptosis | Inhibition or mimic in PCOS patient-derived granulosa cells; NF-kB reporter. |
| WWP2 | PCOS; ROS-induced apoptosis | Knockout in granulosa cell lines; ubiquitination assays for BAK. |
| SESN2 | Oxidative stress response; apoptosis | Overexpression or knockdown; ROS measurement and apoptosis assays. |
| YAP1 | DOR; mitochondrial function and apoptosis | Knockdown or overexpression; mitochondrial function assays. |
Polycystic Ovary Syndrome (PCOS)
PCOS is characterized by hyperandrogenism, anovulation, and polycystic ovaries. Increased granulosa cell apoptosis contributes to follicular arrest and ovulatory dysfunction. miR-93-5p promotes apoptosis and ferroptosis via NF-kB signaling in PCOS, and WWP2-mediated ubiquitination of BAK under ROS stress exacerbates apoptosis. Targeting these pathways may restore normal follicular development.
Diminished Ovarian Reserve (DOR) and Premature Ovarian Insufficiency (POI)
DOR and POI are marked by a reduced number of follicles and early loss of ovarian function. miR-484 contributes to DOR by downregulating SESN2 and YAP1, leading to increased granulosa cell apoptosis and mitochondrial dysfunction. Oxidative stress is a common driver in these conditions, making antioxidant and anti-apoptotic strategies of therapeutic interest.
Oxidative Stress-Induced Ovarian Dysfunction
Excessive ROS production damages granulosa cells and impairs oocyte quality. Oxidative stress activates intrinsic apoptosis and can also trigger ferroptosis, as seen in PCOS models. Understanding the crosstalk between apoptotic and non-apoptotic death pathways is essential for developing interventions that preserve ovarian function.
From regulation of granulosa cell apoptotic process-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does gene X regulate granulosa cell apoptosis? | CRISPR knockout in a granulosa cell line (e.g., KGN) followed by apoptosis assays. |
| Does a specific point mutation in gene X alter apoptotic sensitivity? | CRISPR point mutation (e.g., base editing) in primary granulosa cells or cell lines. |
| Does overexpression of gene X protect against apoptosis? | CRISPR knock-in of a constitutive or inducible promoter driving gene X. |
| Does a tagged version of protein X localize to mitochondria during apoptosis? | CRISPR knock-in of a fluorescent tag (e.g., GFP) at the endogenous locus. |
| What is the role of a microRNA in apoptosis? | CRISPR knockout of the microRNA locus or overexpression via lentiviral vectors. |
| Can a candidate gene rescue apoptosis in a disease model? | CRISPR knock-in of a rescue construct in patient-derived cells. |
How to Study the regulation of granulosa cell apoptotic process Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Annexin V/PI flow cytometry | Phosphatidylserine externalization and membrane integrity | Quantify early and late apoptosis. |
| Caspase-3/7 activity assay | Executioner caspase activity | Confirm apoptotic commitment. |
| JC-1 staining | Mitochondrial membrane potential | Assess MOMP. |
| DCFH-DA ROS assay | Intracellular reactive oxygen species | Link oxidative stress to apoptosis. |
| Luciferase reporter assay | MicroRNA-target interaction | Validate miR-484/SESN2 or miR-93-5p/NF-kB axes. |
| CRISPR knockout | Gene function loss | Identify causal regulators of apoptosis. |
| RNA-seq | Transcriptome changes | Discover pathways altered during apoptosis. |
| Western blot | Protein expression and cleavage | Detect BAX, BCL2, cleaved caspase-3. |
Apoptosis assays
Flow cytometry with Annexin V/PI staining, TUNEL assays, and caspase-3/7 activity assays are standard methods to quantify granulosa cell apoptosis. These can be combined with mitochondrial membrane potential dyes (e.g., JC-1) to assess MOMP.
Oxidative stress measurement
ROS levels can be measured using DCFH-DA or MitoSOX, and antioxidant capacity via glutathione/GPX assays. These are critical for linking oxidative stress to apoptosis regulation.
MicroRNA functional studies
MicroRNA mimics and inhibitors, luciferase reporter assays for target validation, and qPCR for microRNA expression are used to dissect microRNA-mediated regulation of apoptosis.
CRISPR screening and functional genomics
Genome-wide CRISPR knockout or activation screens in granulosa cell lines can identify novel regulators of apoptosis. Hits are validated by individual gene knockout and apoptosis assays.
How CRISPR Can Be Used to Study GO:1904708 regulation of granulosa cell apoptotic process
Knockout
CRISPR knockout of candidate genes (e.g., BAX, BAK, WWP2) in granulosa cell lines or primary cells can determine whether the gene is required for apoptosis. For example, WWP2 knockout would test its role in ROS-induced BAK ubiquitination and apoptosis. Knockout of anti-apoptotic genes like BCL2 would sensitize cells to death.
Point Mutation
CRISPR base editing or prime editing can introduce specific point mutations to mimic disease-associated variants or to disrupt phosphorylation/ubiquitination sites. For instance, mutating the ubiquitination site on BAK could test its relevance to WWP2-mediated apoptosis. Point mutations in SESN2 or YAP1 could reveal residues critical for their anti-apoptotic function.
Knock-in
CRISPR knock-in can be used to overexpress a gene of interest or to tag endogenous proteins. For example, knocking in a fluorescent tag at the BAX locus allows real-time imaging of BAX translocation during apoptosis. Knock-in of a constitutively active YAP1 mutant could test its protective role.
Overexpression
CRISPR activation (CRISPRa) or lentiviral overexpression can drive high-level expression of anti-apoptotic genes (e.g., BCL2, XIAP) to test protection against oxidative stress-induced apoptosis. Conversely, overexpression of pro-apoptotic microRNAs like miR-484 can induce apoptosis in granulosa cells.
How EDITGENE Supports regulation of granulosa cell apoptotic process Research
Researchers studying regulation of granulosa cell apoptotic process-related genes often need to determine whether a candidate gene is causally involved in apoptosis, and CRISPR-based models provide the most direct functional evidence. EDITGENE offers a comprehensive suite of services to accelerate this research.
Contact EDITGENE today to design your custom CRISPR model for regulation of granulosa cell apoptotic process research.
Frequently Asked Questions About regulation of granulosa cell apoptotic process
What is GO:1904708?
GO:1904708 is a Gene Ontology biological process term defined as any process that modulates the frequency, rate, or extent of granulosa cell apoptotic process.
What genes are involved in regulation of granulosa cell apoptotic process?
Key genes include BAX, BAK, BCL2, CASP3, CASP9, SESN2, YAP1, WWP2, and microRNAs such as miR-484 and miR-93-5p.
How is granulosa cell apoptosis regulated?
It is regulated by a balance of pro- and anti-apoptotic BCL2 family proteins, caspases, oxidative stress, hormonal signals like FSH, and microRNAs.
What diseases are associated with dysregulated granulosa cell apoptosis?
Polycystic ovary syndrome (PCOS), diminished ovarian reserve (DOR), and oxidative stress-induced ovarian dysfunction.
What is the role of oxidative stress in granulosa cell apoptosis?
Oxidative stress activates the intrinsic apoptotic pathway and can also induce ferroptosis, contributing to ovarian dysfunction.
How can CRISPR be used to study granulosa cell apoptosis?
CRISPR knockout, point mutation, knock-in, and overexpression models allow causal testing of specific genes in apoptosis regulation.
What are the best cell models for studying granulosa cell apoptosis?
Common models include KGN and COV434 granulosa cell lines, as well as primary granulosa cells from patients or animal models.
What is the difference between apoptosis and ferroptosis in granulosa cells?
Apoptosis is caspase-dependent programmed cell death, while ferroptosis is iron-dependent lipid peroxidation; both can occur in granulosa cells and are regulated by distinct pathways.
Which microRNAs regulate granulosa cell apoptosis?
miR-484 promotes apoptosis by targeting SESN2 and YAP1, and miR-93-5p promotes apoptosis and ferroptosis via NF-kB signaling.
How does FSH affect granulosa cell apoptosis?
FSH controls granulosa cell glutamine synthesis, which is required for ovulation and may influence cell survival.
Conclusion
GO:1904708, regulation of granulosa cell apoptotic process, is a central node in ovarian biology that integrates hormonal, oxidative, and microRNA-mediated signals to control follicular fate. Its dysregulation is implicated in major reproductive disorders such as PCOS and DOR, making it a high-priority target for mechanistic and therapeutic research. Advances in CRISPR genome editing now enable precise functional interrogation of candidate regulators, and EDITGENE provides end-to-end services to support such studies. By combining rigorous experimental models with bioinformatics, researchers can accelerate the discovery of novel targets to preserve ovarian function and treat infertility.
References
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